Water is not made artificially, so when we get rid of water or pullute it, we are losing that natural recource, therefore making it limited.
Answer:
Aqueducts
First developed around 312 B.C., these engineering marvels used gravity to transport water along stone, lead and concrete pipelines and into city centers. Aqueducts liberated Roman cities from a reliance on nearby water supplies and proved priceless in promoting public health and sanitation.
Concrete
Many ancient Roman structures like the Pantheon, the Colosseum and the Roman Forum are still standing today thanks to the development of Roman cement and concrete. The Romans first began building with concrete over 2,100 years ago and used it throughout the Mediterranean basin in everything from aqueducts and buildings to bridges and monuments. Roman concrete was considerably weaker than its modern counterpart, but it has proved remarkably durable thanks to its unique recipe, which used slaked lime and a volcanic ash known as pozzolana to create a sticky paste. Combined with volcanic rocks called tuff, this ancient cement formed a concrete that could effectively endure chemical decay. Pozzolana helped Roman concrete set quickly even when submerged in seawater, enabling the construction of elaborate baths, piers and harbors.
In middle adulthood, a person is most likely to lose an inch in height.
This happens because as we grow older, our bone density lessens (in the spinal column) which results to a collapsed vertebra. Another reason that people lose around an inch in height during middle adulthood is because joint cartilage in adults get exhausted.
Mariana Islands and Puerto Rico
De solo because they didn't settle there problem
